TNFRSF12A and polycystic ovary syndrome: A cross-sectional study conducted in 2024 revealed significantly higher plasma levels of amyloid precursor protein (APP), fibronectin (FN), and its fragments FN1.3 and FN1.4, as well as APO-E and von Willebrand factor (vWF) in PCOS patients compared to non-PCOS women.